It is not needed to add low quality contents to your website because they will not help with SEO benefits in the long term. If you are caring about your site, add to your knowledge by studying a lot of articles published and written by the experts already and then start making your first copy, gradually you would get better at writing. If you are going to hire a professional copywriter, that idea would also be nice as they would write quality contents that may also be expensive in some cases.